Improvement in harvester-rakes



2 SheetsSheet 1 W PIMLOTT HARVESTER BAKE.

No. 109,449. PatentedNov. 22, 1870.

Inventor.

Witnesses.

wa/ w gb x w No. 109,449. Patented Nov. 22, 1870.

Inventor.

Witnesses.

Wol %M4 W W WILLIAM PIMLOTT, OF BROGKPORT, NEW YORK:

Letters Patent No. 69,449, dated November 22. 1870.

IMPROVEMENT IN HARVESTER-RAKES.

The Schedule referred to in these Letters Pa nt and making part of the same.

To all whomit may concern Be it known thatI, VILLIAM llarno'r'r, of Brockport, county of Monroe and State of New York, have invented a certain new and useful Improvement in Harvesters and I. do hereby declare the following to be a snflicicntly clear and exact description of thesame, that any one skilled in such matters may, by referring to the accompanying drawing and letters of reference thereon, construct and use the same.

The peculiar feature of my invention consists in a certain device or piece of mechanism, so constructed that the gate or switch for converting the reel: arms of harvesters into arms for raking the grain from the platform of such machines, may be controlled automatically by one or more of said arms, and, at the same time, be under the complete control of the oporator of the machine.

Figure 1 is a view in elevation of a portion of a harvester, showing the front edge of the linger-bar or platform of the machine and the rake-arm in the position for removing the cut grain from the platform.

Figure 2 is a similar view of the machine, but showing the rake-arm as having performed its work and one of the reel-arms in the position of completing its operation.

Figure 3 is a plan of the track or cam-way upon which said arms travel, showing the rake-arm as just approaching the lever that holds the gate or switch which divides the track.

Figure dis a partial plan of the same track, showing the controlling device or mechanism in another position or the reverse ofthat shown in fig. 2.

Like letters refer to like parts in all the views.

A is the finger-bar or front edge oi the platform of the harvester. v I

B, the support or pedestal that carries the raking and reeling apparatus.

0, the track upon which the cams are mounted that give direction to the rake and reel-arms D is the head to which the rake and reel-arms are attached, only two of which are shown as at E and F, but the spaces for the others are shown at G, H, and I, there being usually only five in all upon such machines.

Thesearms are usually made of wood aml attached as shown at E and F, to brackets b, of iron, at the angle of which they are pivoted to the head D by a pin or bolt through them, and'upon which they work as a fulcrum.

Upon the lower end of said brackets are frictionwheels at, so arranged as to travel upon the cam-shaped track 0, which thereby gives the proper motion to the arms.

As one or more of theseis used for raking off the cut grain from the platform,it is necessary that it shall swoop in a plane corresponding with the platform of the machine, and as the reel-arms must be carried at a higher elevation to prevent their acting as rakes, a dilfercnt track must be provided for them. Biiil as the operation of raking begins very nearly where the operation of reeling ceases, it has been found to require innch mechanical ingenuity to introduce any device in so small a space upon the cam-track'(-, and make it work with precision and continuity.

The best device of which I have any knowledge is the one shown at L, and which simply a curved lover or switch, the tongue of which serves as the (lividing rib or cum to shift the rake and reel-levers.

'lhis lcvcr L is pivoted, near its center, upon the cam-track U, and is controlled in one direction by a spring around its pivot, as shown in figs. 1 and 2.

1f the spring is so arranged as to throw it out from the position shown at L, figs. 3 and 4, then the device 1 projecting through the cam-track, will retain itnntil released by one of the arms, said arm being the one that serves to rake the gavel of grainii'oni the platform.

13y referring to iig. l at E, there is shown a projection from the bracket that is pivoted at 7), which, as the arms revolve, comes in contact with a portion 01 the holding device K at 0, and trips it so as to reverse -the switch L, and permitit to quickly operate in whatever direction the spring may be arranged to move it.

As shown in the drawing, figs. 3 and 4, the switch would throw the ii'ietion-wheclsnoutward, and thereby raise the arms from the platform, as represented at F, fig. :2. But as soon as the latch is tripped by the projection upon one or more of the arms striking the point ate, or by drawing the rod at 1/, which may be connected with a pedal or lever upon the main frame of the machine, the spring instantly shifts the switch L and closes the track, so that the succeeding friction-wheel 'n. will pass inside of said switch, and cause one of the arms to act as a rake traveling in a plane parallel witlrthc platform, as shown at E, 1.

But it will he observed, owing to the curved shape of the switch L, that as the friction-wheel nis passing along its track, itwill strike the curved end of said lover or switch, and thereby c1056 said track, moving the switch inward, as shown at L, figs. 3 and 4-, and when it is closed, the device orlatch K will hold it in position until tripped by the projection on the rakearm 1), or by the operator of the machine through the rod y.

It is evident that said latch may hold the switch closed .or open, as dcsircd, by being placed in various positions in the cam-track, either in front of the pivot upon which the switch works, or in the rear, as shown at fi 4, where the latch holds against the inner face of the curved portion of said switch, the effect is the same in both "cases, and I have arranged them in both ways to suit the convenience of other portions of the machines, or as may be desired by various builders of such machines.

The controlling device-latch K, as represented in the drawing by the shadirg in blue, is precisely the .form which I have made it during the past and present years, and is simply one piece of metal, having the holding and tripping projections 11 and 0 so combined that when one is moved the other-- must operate, instantly or without any lost motion. But the form may be varied in some respects, and instead of the large portion which serves as a weight ,to hold the latch part in working position, a spring may be sub stitnted to serve as a counter-balance or working power in reversing said device or latch.

\Vhat I claim therefore, and desire to secure by Letters 1atent,is--

The device K, with its project-ions p and 0, when constructed to operate substantially as described, and for the pnrposes set forth.

WILLIAM PIMLOTT. 1

Witnesses:

JOHN H. SmrMEs, BOYD Emor. 

